JPH034088Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a unit for molded circuit breakers, overcurrent protection devices, etc. installed in control centers used for centralized control of auxiliary equipment in power plants or general industrial facilities. This invention relates to a panel frame that constitutes the framework of an outer box that houses units that are grouped together for each circuit.

[Conventional technology]

This type of board frame is generally formed into a rectangular parallelepiped by combining various frame members formed into a groove shape and then assembled by welding.

[Problem that the invention attempts to solve]

However, conventional panel frames of this type have a problem in that the frame members cannot always be easily welded together. In other words, it is difficult to position each frame member due to the structure in which the frame members are simply butted together and welded, and after welding surplus material is scraped off after welding the respective joints, etc. processing operations required;
Also, there are various problems such as increasing the length of welding, which is done for the purpose of increasing the joint strength.

This idea solves the difficult part positioning work that occurs when simply butt welding the various frame members that make up the panel frame, the post-processing work such as scraping off the excess welding part, and the strength of the parts. The purpose is to avoid increasing the weld length for the purpose of increasing the length.

[Means for solving problems]

This idea is based on the fact that each of the opposing sap members of a quadrilateral frame, which connects the upper and lower ends of the corner posts with groove-shaped cross sections arranged at the four corners, has standing legs on both sides of the horizontal wide legs. The width horizontal member has a groove-shaped cross section, and the opposite side member is constituted by a depth horizontal member having a groove-shaped cross section, in which a horizontal long leg and a short leg are respectively provided on both sides of a vertical leg. The corner portions of both of the horizontal members are fitted into square holes drilled through both rising legs of the width horizontal member so that a protrusion protruding from one end of a joint vertical leg inscribed in the vertical leg of the depth horizontal member is inserted. The joint horizontal leg circumscribing the horizontal short leg of the depth horizontal member is joined by a joint having a substantially L-shaped cross section that fits into the cross-sectional groove of the corner support.

[Effect]

Therefore, according to the configuration of this invention, the protrusion at one end of the joint vertical leg of the joint is fitted into the square hole bored horizontally in both the rising legs of the width horizontal member, and the inner part of the joint vertical leg is inserted. When the vertical legs of the depth-horizontal member are brought into contact and engaged, the joint horizontal leg will be circumscribed by the horizontal short leg of the depth-horizontal member, and the joint horizontal leg will fit into the cross-sectional groove of the corner support. Then, the horizontal members and the corner supports are reliably positioned, and then the contact surfaces of the respective members are welded to form the board frame.

〔Example〕

Next, the embodiments of this invention will be explained with reference to the drawings.
The board frame 1 according to this invention has one opposing sap member of a quadrilateral frame that connects the upper and lower ends of corner supports 2, which will be described later, and which have a grooved cross section and are arranged at the four corners, as shown in FIG. The width horizontal member 5, which will be described later, has a groove-shaped cross section, and the other opposite sap member is constituted by a depth horizontal member 6, which will be described later, which has a groove-shaped cross section.
In addition, main supports 4 are installed between the upper and lower sides of the horizontal horizontal member. As shown in FIG. 1, the corner strut is a columnar body having a groove-shaped cross section, with strut rising legs 2b attached to both sides of a strut width leg 2a. As shown in FIG. 1, the width horizontal member is composed of a columnar body with a groove-shaped cross section in which rising legs 5b are placed upright on both sides of a horizontal width leg 5a. Square hole 5d
A fillet weld notch 5c is provided by cutting out the ends of the width leg at both ends. Further, as shown in FIG.
It is made up of a columnar body with a groove-shaped cross section on which horizontal long legs 6b are provided, which are also provided with a stepped portion 6d on the outer side to facilitate attachment of a bottom plate, etc. (not shown). Then, a slit notch 6e equivalent to the plate thickness of the joining joint 20, which will be described later, is formed at the meeting corner between the vertical leg and the horizontal short leg at both ends, and a centering round hole is formed in the vertical leg at both ends. 6f is perforated. Next, as shown in FIG. 1, the joining joint connects the corner portions of both the width and depth horizontal members, and the joint horizontal leg 20b is attached to the inside of the panel frame of the joint vertical leg 20a. Approximately L with flat
It is formed from a short columnar body with a letter-shaped cross section. Then, the joint vertical leg and the horizontal leg are brought into close contact with the inner and outer surfaces of the vertical leg 6a and the horizontal short leg 6c of the depth horizontal member 6, respectively, and the end of the joint vertical leg on the corner side of both the horizontal members is formed to form a protrusion 20c, which can be freely fitted into the square hole 5d of the width horizontal member. Furthermore, the end of the joint horizontal leg is made to have approximately the same length as the end of the projection so that the joint horizontal leg 20b comes into contact with the upper surface of the width leg 5a of the width horizontal member after the projection 20c is fitted, and the joint horizontal The leg is fitted into a cross-sectional groove of the corner support 2 whose end surface is in contact with the upper surface of the width leg of the width horizontal member 5.

Therefore, when assembling each frame member, the protrusion 20 of the joining joint 20 is inserted into the square hole 5d of the width horizontal member 5.
When c is inserted, the joint is positioned perpendicular to the width horizontal member. Next, when the vertical leg 6a of the depth horizontal member 6 is inscribed in the joint vertical leg 20a of the joint so as to fit into the slit notch 6e of the depth horizontal member 6, both the horizontal members are assembled orthogonally. A quadrilateral frame is formed. Next, when the cross-sectional groove of the corner support 2 is fitted into the end of the joint horizontal leg 20b of the joint and the corner support is erected, the mutual positioning of the frame members is completed. Next, as shown in FIGS. 3, 4, and 5, fillet welding is performed at the positions of the weld build-up parts 30, 31, 32, and 33, and the plate frame body is completed. Since the weld build-up portion 31 is within the fillet weld notch 5c of the width horizontal member 5, finishing with a grinder is not required, and the weld build-up portion 33
Since these parts are located within the slit notches 6e of the horizontal horizontal member 6, finishing work is similarly not required, and since both parts are open to the outside of the panel frame, welding work can be easily performed. Note that after the above-described assembly welding, the intermediate struts 3 and the main struts 4 are welded as necessary.

Moreover, if a round hole 20d is drilled in the joint vertical leg 20a of the joining joint 20 at a position that aligns with the centering round hole 6f drilled in the vertical leg 6a of the depth horizontal member 6, it is possible to It can be used for bolt tightening holes in parallel plates, and pin-shaped jigs can be inserted and accurately positioned during welding and assembly.

[Effect of idea]

As mentioned above, this invention enables reliable positioning of the corner supports, width horizontal members, and depth horizontal members located in the main part of the panel frame body using joints, making it possible to weld them together accurately and easily. In addition, since the joint is interposed at each frame member joint, the joint strength is greatly improved compared to conventional butt joints. In addition, since the joint horizontal leg closes the gap between the contact part with the width horizontal member that is caused by errors in the long corner support, there is no welding failure, and it is also possible to weld within the fillet weld notch. The practical benefits of this idea are significant, such as eliminating the need for post-finishing and requiring only a short weld length.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of the main parts showing an embodiment of this invention, Fig. 2 is a perspective view of the panel frame, and Figs. FIG. 5 is a front and side view showing the main parts of the depth-horizontal member and the joint portion by the joining joint, respectively. FIG. 1... Board frame body, 2... Corner support, 5... Width horizontal member, 5a... Width leg, 5b... Standing leg, 5c
... Fillet weld notch, 5d ... Square hole, 6 ... Depth horizontal member, 6a ... Vertical leg, 6b ... Horizontal long leg, 6c ... Horizontal short leg, 6d ... Stepped part, 6e ...
Slit notch, 6f... Centering round hole, 20...
Joint joint, 20a... Vertical joint leg, 20b... Horizontal joint leg, 20c... Protrusion, 20d... Round hole,
30, 31, 32, 33...Weld overlay portion. In addition,
The same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims for Utility Model Registration] (1) One side member of each of the quadrilateral frames connecting the upper and lower ends of the corner posts with groove-shaped cross sections arranged at the four corners on both sides of the horizontal width legs. A width horizontal member with a groove-shaped cross section with a standing leg, and a depth horizontal member with a groove-shaped cross section with a horizontal long leg and a short horizontal leg on both sides of the other vertical leg. A protrusion projecting from one end of the joint vertical leg inscribed in the vertical leg of the depth horizontal member is formed in each corner of the horizontal member by penetrating both rising legs of the width horizontal member. At the same time, the joint horizontal leg circumscribing the horizontal short leg of the depth horizontal member is fitted into the cross-sectional groove of the corner support by a joint having a substantially L-shaped cross section. A board frame body characterized by. (2) The panel frame according to claim 1 of the utility model registration claim, wherein round holes are formed between the vertical legs of the joint and the vertical legs of the depth horizontal member that are in contact with each other for alignment.